Scilab Wavelet Toolbox Function
Last update : Feburary 2006
wave - wavelet filter obtaining
Calling Sequence
-
Lo_R=wave(wavename)
Parameters
-
wavename
: wavelet name
- 'haar': haar wavelet
- 'db1': daubechies 1 wavelet, same with haar
- 'db2': daubechies 2 wavelet
- 'db3': daubechies 3 wavelet
- 'db4': daubechies 4 wavelet
- 'db5': daubechies 5 wavelet
- 'db6': daubechies 6 wavelet
- 'db7': daubechies 7 wavelet
- 'db8': daubechies 8 wavelet
- 'db9': daubechies 9 wavelet
- 'db10': daubechies 10 wavelet
-
Lo_R
: Lowpass Reconstruction Filter
Description
This function obtains the Low pass Reconstruction filter of
selected wavelet family. Length of the filter is two of the number at
the end of the wavelet name. For example, db2 input will provide
a filter wtih the length of 4.
Examples
-->Lo_R=wave('db1')
Lo_R =
! 0.7071068 0.7071068 !
-->Lo_R=wave('db2')
Lo_R =
! 0.4829629 0.8365863 0.2241439 - 0.1294095 !
-->Lo_R=wave('whatever')
whatever is not available!
See Also
orthfilt